Apparatus for analyzing the elemental composition of a liquid sample and methods of using the same

A technology for elemental composition and liquid samples, which is used in the preparation of test samples, analysis of materials, electrical excitation analysis, etc.
CN109690296AActive Publication Date: 2019-04-26阿格尼丝奥布肖斯卡
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
阿格尼丝奥布肖斯卡
Publication Date
2019-04-26

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Abstract

A device and method is described for analyzing the elemental composition of a liquid sample utilizing a combination of electrochemical pre-concentration followed by spectrochemical analysis of analytein a single device. The device consists of two electrodes for the purpose of pre- concentration of the analyte ions by electro-deposition, a DC power supply / potentiostat / galvanostat, a high voltage power supply capable of creating an electrical discharge such as arc, spark, glow discharge or plasma, a spectrometer capable of recording a spectrum generated during such discharges as well as a pump(s) for pumping the analyte containing solution. Such a device is autonomous, field-deployable and capable of providing online analysis.
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Description

[0001] The present disclosure relates to a device for analyzing the elemental composition of a liquid sample, and more particularly to a device that utilizes electrochemical preconcentration of analytes at the surface of an electrode to deposit analytes by high energy discharge or plasma evaporation and excitation , and perform spectrochemical detection of the analyte based on its characteristic atomic emission or mass spectral signal. Background technique

[0002] Elemental analysis of samples is critical in many scientific disciplines and is commonly performed in environmental monitoring, drinking water monitoring and food analysis. Elemental analysis is usually performed by optical atomic spectroscopy techniques such as atomic absorption (AA), inductively coupled plasma-atomic emission spectroscopy (ICP-OES), atomic fluorescence spectroscopy (AFS) or by inductively coupled plasma-mass spectrometry (ICP-MS). These methods can provide very good detection limits, although they...

Claims

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